scholarly journals Recovery of Iron from Mill Scale by Reduction with Carbon Monoxide

Minerals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 529
Author(s):  
Krzysztof Nowacki ◽  
Tomasz Maciąg ◽  
Teresa Lis
Keyword(s):  
Carbon Monoxide ◽  
Steel Industry ◽  
Iron And Steel Industry ◽  
Analysis Method ◽  
Iron Particles ◽  
Secondary Oxidation ◽  
Iron And Steel ◽  
Mill Scale ◽  
Scale Reduction ◽  
Extended Surface

The mill scale is a waste from the iron and steel industry. Due to the high content of iron in the form of oxides, it is an attractive material for the recovery of metallic iron by reduction. The product of mill scale reduction is an iron with a very extended surface and a high affinity for oxygen. The smaller iron particles are, the easier it is for spontaneous rapid oxidation, which can be linked to pyrophoricity. This article presents results of experiments using the TG/DTA thermal analysis method aimed at verifying the possibility of recovering iron from the mill scale by a reduction with carbon monoxide at 850 °C, 950 °C, and 1050 °C, taking into account the phenomenon of secondary oxidation in contact with oxygen from air at temperatures of 300 °C, 350 °C, and 400 °C. Two forms of mill scale were used for tests, in the original state and after grinding to develop the surface.

Study on the Reduction of Oolitic Hematite Ores in N2-CO Atmosphere

2014 ◽  
Vol 968 ◽  
pp. 198-201
Author(s):  
Guang Long Jin ◽  
Jin Zhu Zhang ◽  
Ben Jun Xu ◽  
Song Yang
Keyword(s):  
Carbon Monoxide ◽  
Steel Industry ◽  
Iron Ore ◽  
Direct Reduction ◽  
Iron And Steel Industry ◽  
Iron And Steel ◽  
Reduction Time ◽  
Potential Source ◽  
Maximum Value ◽  
Metallization Rate

The oolitic hematite will be a potential source of raw iron ore for the Chinese iron and steel industry. Up to now, the oolitic hematite have hardly been utilized effectively by any single traditional technology. The direct reduction may be a practical technology for the exploitation of oolitic hematite. The results show that the metallization rate of the HeZhang oolitic hematite increases with both the partial pressure of CO increase and the reduction time lasted, and the maximum value of the metallization rate is obtained at 35% carbon monoxide in the N2-CO atmosphere and 4h reduction time at 1050°C with 10% calcium oxide in the oolitic hematite. The diffusion may be the primary factor controlled the metallization rate in the later stage of reduction.

scholarly journals Economical and Environmental Friendly Methods for Separation of Oil from Mill Scale

2019 ◽  
Author(s):  
Muhammad Shoukat Hussain ◽  
Asra Shoukat ◽  
Hafiz Syed Umer Nasir ◽  
Ammara Shoukat
Keyword(s):  
Steel Industry ◽  
Microbial Fuel Cells ◽  
Sinter Plant ◽  
Iron And Steel Industry ◽  
Iron And Steel ◽  
Mill Scale ◽  
Zero Waste ◽  
Environmental Friendly ◽  
Ferrous Metals ◽  
Non Ferrous Metals

Mill scale is the by-product of iron and steel industry. It can be recycled via sinter plant or solid as sinter feed materials. 85 to 90% of the constituent particles are more than 0.008 inches. The iron content is near around 70 %, with a very small amount of alkaline compounds and non-ferrous metals. Mill scale is polluted and contaminated with lubricants, oils and greases from the equipment. In this experiment for recovering of oil from mill scale, it is treated with three different methods. Then all methods were compared according to the ability of oil elimination and iron recovered. After washing and boiling with surfactants, large amount of polluted waste water becomes a problem for environment so this wastewater was utilized for making of Microbial Fuel Cells (MFCs), production of electricity in MFC depends on the biodegradation of organic materials, so different waste were added in wastewater for making MFC. The remaining of MFC was converted in bioethanol, biodiesel and biofertilizer. So this research is economical and environmentally friendly and fulfilled the important aspect of green environment with zero waste. It will be a mile stone in the research of metallurgy, environmental engineering, recycling technology and zero waste management.

The British Iron and Steel Industry: 1929-49

1950 ◽  
Vol 23 (2) ◽  
pp. 117
Author(s):  
Stanley H. Friedelbaum
Keyword(s):  
Steel Industry ◽  
Iron And Steel Industry ◽  
Iron And Steel

scholarly journals Can methane pyrolysis based hydrogen production lead to the decarbonisation of iron and steel industry?

2021 ◽  
Vol 10 ◽  
pp. 100079
Author(s):  
Abhinav Bhaskar ◽  
Mohsen Assadi ◽  
Homam Nikpey Somehsaraei
Keyword(s):  
Hydrogen Production ◽  
Steel Industry ◽  
Iron And Steel Industry ◽  
Iron And Steel ◽  
Methane Pyrolysis

IE Tools for Boosting Competitiveness in Iron and Steel Industry: A Review

2021 ◽  
Author(s):  
Milind Akarte ◽  
Vivek Khanzode ◽  
Rauf Iqbal ◽  
Manoj Kumar Tiwari
Keyword(s):  
Steel Industry ◽  
Iron And Steel Industry ◽  
Iron And Steel
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